A cobpobation



.March 9 1926.

J. M. GARVEY l SUBGRADE PLANER Filed Jan. 6, 1922 2 Sheets-Sheet 2 llH H.

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Patented Mar. 9, 1926.

UNITED STATES PATENT OFFICE.

JAMES M. GARVEY, OF APPLETON, WISCONSIN, ASSIGNOR TO GARVEY-WEYENBERG CONSTRUCTION COMPANY, OF APPLETON, WISCONSIN, A CORPORATION.

SUBGRADE IPLANER.

Application filed January 6, 1922. Serial No. 527,422.

To all /w/wm it may conocen.'

Be it known lthat I, JAMES M. Galway, citizen of the United States, residing at Appleton, in the county of Outagamie and State of Wisconsin, have invented certain new and useful Improvements in Subgrade Planers, of which the following is a specification.

My invention comprises a machine for smoothing, scraping, or planing road subgrades in preparation thereof for the building of an appropriate road surface. A machine of this type is especially desirable and kuseful for operation upon the sub-grades of roads to be concreted or otherwise paved or resul-faced.

A unique and important feature of the invention resides in the combination of my road planing and scarifying means with a mixing machine, such as is commonly now known as a concrete paver, the mixing machine being of a portable type and having equipment for loading, mixing and depositing concrete aggregates upon the sub-grade. By uniting my planing and scarifying instrumentalities with the mixing machine, I obtain a single machine which 1s capable of doing the work heretofore necessitating two separate machines, witlrresultant saving of expense of construction, and of greater iniportance, cost of operation.

Respecting my planing and scarifying means per se it is notable that I employ a novel construction of carrier or frame adapted to be supported upon, and to operate along the usual road forms or rails provided at opposite sides of a roadbed, and between which a concrete pavement is deposited and molded, so to speak. My carrier or frame is equipped with suitable scraping and scarifying devices, together with special connecting devices by which the carrier is attached to the mixing machine so as to be propelled thereby as the mixing machine progresses. The attaching means between the planing and scarifying machine and the mixing machine are peculiar in that they are especially designed so as to accommodate for slight lateral shifting, relatively, between the planer and the mixing machine truck to which it is attached. Likewise, said attachment means accommodates for relative vertical movements of these two machines incident to inequalities in the surface over which theypass, and other possible conditions of service.

The foregoing, together with the other incidental features of construction constitute primarily novel phases of my invention,

which will be more fully understood upon reference to the detailed description in conjunction with the `annexed drawings, in the latter of which:

Figure l is a plan View of a combined mixing machine, a planer and scaril'ier, embodying my invention, the body of the mixing machine being omitted so as to show the relation of the planer and scariier relative to thel traction supporting means of the main or mixing machine.

Figure 2 is a front view of the planer and scarilier showing the relation of the same to the front wheels of the paver or mixer.

Figure 3 is a view in elevation of the carrier or frame of the planer, and illustrating more fully the arrangement and construction of the scraping or cutting blades.

Figure -l is a side elevation showing primarily the parts illustrated in Figure l together with a portion of the loading skip that forms a part of the paving machine.

Figure 5 is a diagrammatic side view showing the invention `applied to what is known as a paving machine of the well known Koehring type.

Describing my invention in detail and referring to the drawings, A designates the loading skip of the paver or mixing machine, B the front wheels, and C shows diagramatically the rear multiplanes or caterpillars. Projecting il'orwardly from the front axle l of the machine, on which the wheels B are mounted, are the spaced arms 2 of substantial formation,y and inclining downwardly to support the cross bar 3. Attached to the opposite ends of the cross bar 3 by hinged joints '-1 are the draw bars or members 5 consisting of suitable channels, or any preferred construction. The track members 5 extend some distance rearwardly to points in a plane a little in the rear of the front wheels B and the rear ends of the members 5 are connected with the carrier 6, forming a part of my sub-grade planer,

`bars 7 disposed largely in pairs at right angles to each other or at an inclination to the longitudinal plane of the machine. c Also the beams 6 are connected by a rear series o'l sc 'aper bars 8 which have the function of' planing or scraping the surface of the subgrade, "to the desired level. The Yfront angle bars 7, 4carry a suitable number of -scarifying teeth 9, and the scraper blades of the bars 8 may be detachable for purposes oli' renewal kin ease of Wear or breakage. The scraper bars 8 have somewhat the lsame arrangement -as the bars 7 that support the scarifying teeth which operate, fof course, in advance of the bars. There is a seriesof smaller scraper bars intermediate the bars of a series o larger scraper bars, 4the terms smaller and 4larger being 'used in the senseparticularly of length. All ofsaid bars have an angular disposition relatively to one another, giving rise to la very efticient and desirable arrangement in regard to their scraping or cutting functions.

l utilize U shaped connecting members 1() intermediate the 'draw bars 5 and the carrier 6. llhewmeml'iers 1() are largely U bolts, their opposite sides being threaded and attached by suit-'able nuts to the tivo 'foremost anglebeams `6 oft the carrier and in a manner which 'Will be readily apparent. ylhe transverse portions of the connecting members 10 `are received and operate between. rollers l1, on the rear ends of the draw bars 5.

In this Way it isevident that the means attaching thesub-grading machine of my invention to the mixer accommodates for relative transverse and vertical movement with respectto the mixing or paving machine.

Near the opposite ends thereof the 'two rearmost rangle beams of the carrier G have rollers 12 vvvhich are disposed so as to engage the inner sides of road forms or rails 13 seen best in Figures l andQ; rlhe rollers 12 Yform anti-frietion devices between the carrier 6 and the road forms 13. Also it is to be observed that the opposite extremities oil? the angle beams `ol the carrier G engage over and freely slide on the tops or heads of the forms or rails 13. It desired the rollers 12 maybe adjustable and anti-friction rollers might also be interposed between the tops of the road forms 13 and the extremities of the carrier G aforesaid.

It is clear that as the paver advances in its operation to load aggregates into the mixer, mix the .iggregates, and dump the aggregates on the subgrade as concrete, the sub-grading planer and scaritier of my in navarra means `whereby to permit 4vrelat-ivemovement kbetween Athe paving machine and theserap- `mg device,as-the 4two -operateover the sub-` grade.

2. ifi-road :scraper or `planer comprisinga cross beam, rearwardly extending draw bar members hinged thereto, a carrier compris i ing transverse angle beams, jangle bars *and scraper blades connecting said; angle beams, scarilier teeth mounted on `the angle ba-'rs in advance of the scraper' blades, Vconnecting members at the vfront portion of the carrier,rolllers emgagi'ng said connecting inembers and supported on the rear-ends of the draw bar members, thereby permitting relai tive movcmentiol `the `carrier and `draw bar members, said carrierbeing provided with `engaging portions at its endet-o cooperate with road `forms or rails.

,3. A road scraper or planer comprising a cross beam, rearwardly extending draw bar members Ihinged the-reto, a carrier compris- 'lng ltransverse angle beams, scraper blades connecting said angle beams, connecting members atthe front portion ofthe carrier,

rollers engaging said connecting members and supported on the rear ends ofthe draw bar members, thereby `permittingrelative movement or' the carrierand draw bar members, said carrier being provided `'With engaging portions at its rends to cooperatewith road liormsror rails.

il. ln combination, a portable paving mai chine adapted to be advanced over a sub grade, and .a road scraper `for leveling vthe sub-grade 4attached to said paving machine, vthe a'ttaclnnent means comprisingdraW bar means carried by the paving machine, and an operative cmmectionbetween said draw bar means and the scraper, construe'tedr'to permit transverse "movement 'of thescraper relatively tothe paving machine, as the scraper isfdraivn `forward by the paving machine. f

ln combination, a paving machine A'and propelling means therefor, a sub-grade scraper disposed transversely or' the paving machine, and adaptedA to operatein a transverse position upon a road 'si1bg1ade, draw bar means carried by the paving machine. and a connection between said Adraw bar means and the scraper comprising laterally movable members engaging the draw bar means, and adapted to permit transverse shifting of the scraper relatively to the paving machine, with anti-friction means inte-rmediate the draw bai' means and said connecting means.

6. In combination, a portable road paving machine, a sub-grade scraping machine,

attachment means for said machines compris- 10 ing draw-bar means carried by one of said machines, and means between said drawbar means and the other of said machines whereby to permit transverse and vertical movement therebetween, as the two operate 15 

